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Last name Pupu (Pupu , Pupou , Puphu ) , across the world, is quite a rare surname. The surname Pupu is habitual in Papua New Guinea, where it is quite a rare surname, Myanmar, where it is a rare surname, and Romania. In absolute terms, the name is most common in Indonesia, Myanmar, and Papua New Guinea. More frequently, Pupu is the forename as well as the last name.